Reinforcement member

Abstract

Described herein are reinforcing elements that comprise at least one honeycomb element, a first and second adhesive layers and a constraining layer for attachment to a substrate.

1 . A reinforcing element for attaching to a substrate, the element comprising:
 a stiffening layer;   a first thermoplastic adhesive layer adhering the stiffening layer to the substrate, the adhesive having a cure temperature below 600° C.;   a high tensile modulus layer; and   a second thermoplastic or thermoset adhesive layer, the high tensile modulus layer adhering to the stiffening layer by the second adhesive layer, and the first and second adhesive layers having a shear strength of at least 500 N/4 cm 2 .   
     
     
         2 . The reinforcing element of  claim 1 , further comprising a release liner layer. 
     
     
         3 . The reinforcing element of  claim 1 , wherein the stiffening layer comprises a honeycombed core element. 
     
     
         4 . The reinforcing element of  claim 1 , wherein the thermoplastic adhesive layer comprises a pressure sensitive adhesive. 
     
     
         5 . The reinforcing element of  claim 3 , wherein the pressure sensitive adhesive comprises acrylate. 
     
     
         6 . The reinforcing element of  claim 3 , wherein the pressure sensitive adhesive comprises polyacrylate.